Heating system



L. GRAFFLIN HEATING SYSTEM Filed Jan. 17 1921 IEIIII I hull l l I 314mm fox systems for buildings, such as dwellings,

. character which is. cheap to manufacture. and I or acket 6 isan overflow pipela, which de-;.-.-

Patented Aug. 30,1927.

LEWIS GRAFFLIN; or OCEAN VIEW, VIRGINIA, Assrenon, BY DIRECT AND MEsNE'As- SIGNMENTS, TO TWO-SEASON rnocnss. INCORPORATED, or NORFOLK, vme nm,

A CORPORATION on VIRGINIA.

- HEATING SYSTEM.

. Application filed January 17, 1927. Serial No. 161,611.

My invention relates to hot air heating ,while not necessarily restricted to this use.

An important object of the invention is to provide a heating system of the above mentioned character, which will supply the max imum amount of heated air to the desired point or points, with the minimum amount offuel. I w

A further object of the invention is to provide a. system of the above mentioned has a low upkeep, in use and operation,

A further object of the invention 1s to provide means whereby the heatexchange between the source ofheat and the air is effected through themedium of a ,mass of waterwhereby the desired temperature may be more readily maintained.

v.Other objects and advantages of the 1nventionwill be apparent during the course of the following description. r

In the accompanying drawings, forming a part of thisspecification, and in which like numerals areemployed to designate like parts; throughout the; same, i

- Figure 1' re a central vertical longitudinal section through a heatunit embodying my invention parts in elevation, and,

Figure 2 is a horizontal section line 2-2 of Figure 1.

In the drawings, .wherein for the purpose ofillustration, isshown a preferred embodi mentof my inventio nthe numeral 5 designatesan airpressure holding tank or shell,-

whichis preferably circular incross section.

' This tank is closed at its top andbottoimas shown. The tank or shell 5 is arranged within an outer water holding casing or jacket 6, preferably circular in cross section, having a closed bottom 17, while its top is open or otherwisein free communication with the atmosphere.. The outer jackethas a substantially greater diameter than the tank 5 providing a space c8, extendingabout the sidesfand bottom'of the tank 5, and this space is filled with water, up to a desired level, as will be described. The tank 5 is held upon spaced supports or angle irons '9, and the top of the tank preferably extends above the top of the outer casing olqji oket 6, for a slight distance. jacket is in turn supported upon-a bed 10,

constituting a firebox, and a heating eletaken ona The outer casing orelement may be in other forms, such as a gas I burner, or any electricalheating unit.

12, which may be equipped with a suitable valve-l3. This pipe may lead to a water main or, anyothersuitable source, of water. Connected with the upper end of thecasing 6o VVateris supplied in thebottom or lower end of the casing orv jacket G through a pipe termines the'elevation of the water the L.

casing or jacket 6 andwhich may discharge to a sewer or to any other suitable point. The numeral 15 des gnates an air com pressor or, pum 3, shown in the formof rotary blower, w ile any other type of pump 7 or compressorlmay be employed, such as a; reclprocatory pump or the like. The intake;

side. of this compressor is connected with a pipe l6,leading to the exteriorof thebuilding to draw in fresh air. The outlet side of the compressor is connectedjwitha pipell? passingthrough the casing or jacket 6, but having no communication therewith and leading into the bottomofthe inner tank or 115, a s wn.

Gonnected wi preferably extending'beyond the roof of the house, or to, some other suitableexter'ior point, and this riser is equipped witha safety blowervalvel9, which may be adjusted 1 to, permit of the escape of air pressure at any des red pressure, such .as when the preslh the is riser? V sure exceeds two or twoand one-halfpou'nds per ,square inch. By locating, the safety valve exteriorly of the building, the hissing I noise will not be heard. Hotair take-off pipes 22 leadintothetop of. the tank or shell, 5 and are equipped with preferably two-way..valves 23, of any well known or preferred type. Q-Each pipe may,

lead to any desired point of heat distribution and one pipe is shown asconnectedwith a register .24, arranged in the floor of the rooin above the heating unit. course, be understood that any number of pipes 22 maybe employed and these may lead to any desired points of heat distribution. I

Arranged within the tank or shell 5 are horizontal alternately disposed bafileplates It will, of 'l 26 and 27, the outer ends of which are secured to the walls of the inner tank or shelland form a gas-tight joint therewith, while their inner ends are spaced from the opposite side of the tank or shell 5. The battles, therefore, overlap and produce a tortuous passage for the travel or the air, retarding 1ts movement and eifecting a better heat transfer.

In use, I prefer to maintain an air pressure Within the tank or shell 5 between one and one-half to-three pounds per square inch, and the safety valve 19 may be adjusted to prevent the increase of pressure above these limits However, the invention is in no sense restricted to these precise pressures.

When the take-oftpipes 22 are suitably partly or entirely open, the heated air passes to the points of distribution, and the compressor-or-rotary blower is driveniat a suitable I speedto maintain the pressure substantially-constant in the tank 0 While the heated air escaping from the pipes, The pump 5 is preferably driven'by an electric motor, although'any source of power may be'employed. /Vhen the burner 11 is operated the heat-from the same is transmitted to the jacket 6 and Water therein, and the Water efiects aheat exchange with the compressed air in the tank 5. It is preferred that the Waterwithinthe jacket 6 be maintained at a temperature of about boiling point or slightly beneath the same, that is, slightly ofmy invention or the scope of the subjoined claims,

Having, thus described my invention, I claim: 7 V i 1. In a hot air heating system, anair pressure. storage tank, a water jacket surrounding the storage tank, means for applying heat to..the exterior of the water jacket,

means to Withdraw heated air from the air pressure storage tank, and means for supplying air under pressure to the tank and maintaining the pressure substantially c011 stant during the discharge of the airthrough the withdrawing means.

2. In a hot air heating system, anair; pres sure storage tank, a water jacketsurround- 'ing the storage tank; and ;in communication with the atmosphere and free from communication, with the interior of the storage tank, means for applying heat to the exterior of the Water jacket, means to Withdraw heated air from the air pressure storage tank, and means tor; supplying air under pressure above atmospheric pressure to the interior f the storage tank.

' 3. In a hot airheating system, an-air pres sure storage tank, a plurality ofbaflies arranged therein in spacedoverlapping relation to provide atortuous passage't'orthetravelot the an, a water acket sarro'unding= the tank and "having communication with r the atmosphere and tree from communication with theinterior otsaid tank, means for sup plying air under pressure in excess of atmos pheriepressure to 7 one end of the tank, and means for withdrawingtheheated airfrom theopposite end-ofthe tank;

4. In a hot air'heating-system, a substant1ally--vert1cal air-pressure storage tank, a

plurality of generally horizontalbaflies ar ranged therein in spaced overlapping rela tion to provideatortuous passage for the travel of; the air, a substantially vvertical water jacket surrounding the storage tank and havingits top in free communication with the atmosphere and being free from communication withthe, interior otsaid tank, means for applying heat to the botton'r of he-water ja=:ket','means for-supplying air under pressurein excess-of atmospheric-pres sure to the bottom of'said tank, and means for withdrawing heated air t-rom the'top of the tank. y

p 5; Inca hota-ir heatingsystem, a substan tially' vertical water 7 jacket" hav-ing its bottom closed and its top open, a substantially 'vertical' air pressure storage-tank arranged within the; aeket and-having its. side and b'ottom spaced from the side and bottomo f said jacket, a-he ating element arranged'ib'emath the bottom ot the jacket, an air com pressor supplying compressedair tot-he bot: tom of saidtank, outlet means to]: thegheated air connected with the top'of the tank,"and spaced battles arranged within the tank between the air inlet and outlet;

- In testimony whereot'I a'fiix mysignatu-re.

#LEWISGRAFFLIN; 

